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   "source": [
    "### 上周内容\n",
    "* 1.[github education pack](https://education.github.com/pack)\n",
    "* 2.[pycharm安装](https://jupyter.org/)\n",
    "* 3.[jupyter notebook介绍及体验]\n",
    "* 4.[数字 概念]"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "bea1a562",
   "metadata": {},
   "source": [
    "### 本周内容\n",
    "#### 1.jupyter notebook 扩展介绍\n",
    "* jupyter notebook键盘快捷键\n",
    "\n",
    "进入命令模式之后，可以尝试以下快捷键：\n",
    "* A会在活跃单元之上插入一个新的单元，B会在活跃单元之下插入一个新的单元\n",
    "* 连续按两次D，可以删除一个单元。\n",
    "* 撤销被删除的单元，按Z。\n",
    "* Y会将当前的活跃的单元变成一个代码单元。\n",
    "* 按住Shift+上或下箭头可选择多个单元。在多选模式时，按住Shift+M可合并你的选择。\n",
    "* 按F会弹出“查找和替换”菜单。\n",
    "\n",
    "处于编辑模式（在命令模式时按Enter会进入编辑模式）时，可以尝试以下快捷键：\n",
    "* Ctrl+Home到达单元起始位置。\n",
    "* Ctrl+S保存进度\n",
    "* Ctrl+Enter会运行整个单元块。\n",
    "* Alt+Enter不止会运行单元块，还会在下面添加一个新单元。\n",
    "* Ctrl+Shift+F打开命令面板。\n",
    "\n",
    "#### 2.常见几个模块的使用\n",
    "* datetime\n",
    "* time\n",
    "* help()\n",
    "* range()函数的使用\n",
    "* random模块的使用"
   ]
  }
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